Question

Interpret the key features of the graph in the given context, and answer the following questions.Part A
What is the vertex of the function? How do you interpret it in the given situation?
Part B
What is the x-intercept of the function? How do you interpret it in the given situation?
Part C
What is the y-intercept of the function? How do you interpret it in the given situation?
Part D
What is the domain of the function in the given situation? Explain your answer.
Part E
Calculate the average rate of change over the intervals [0, 20] and [60, 80]. What does the average rate on these intervals tell you about the balloon’s journey?

Answer 1

I NEED HELP PLEASE

Answer 2

Here's a labeled image of the curve for parts A, B, and C.
The vertex of this kind of function can be thought of as the "peak" or "valley" of the curve
The y-intercept is where the curve intersects the y-axis
The x-intercept is where the curve intersects the x-axis

Answer 3

what about domain

Answer 4

Here's an example of domain;